National Republican., 1887-12-17
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The following is the oficial report OF tn
superintendent and engineers OF The water
works Of Atlanta, Ca, dated Nov. 20, 1887:
Honorable Board Water Commissioners
GENTLEMEN; According toa resolution ad-
opted by your honorable body at the last meet
ing | have made thorough and complete test
OF the filters as TO their capacity The builders
guarantee ~ that they the twelve illters) shall
Mr. Clayton, city engineer; Mr.. faynes, asst,
tant city engineer, and myself, In behalf of the
city, and Mr. O. II. Kendrick, In behalf OF the
Ssw"s as
pumping station, gave his personal attention
10 the operation OF the engine and pumps. The
large p 0O,O0O gallon) engine was run through
the whole test (The small 100000 gallon
engine Ia usually put in service after the heavy
con.umption oitbe day sover and runthrough
Mr.. Clayton and myself decided that run
of twelve hours, requiring that during the
time six Of the twelve filters should be thor
ougbly washed, would be good and sum
oient test. Tho test was started at 1890 II. IN.
and closed at 1880 p. m. The water being de
livered by the pumps was estimated from the
revolutions Of the engine and was accepted
as the quantity being filtered. Readings were
taken fiom the engine counter and the height
of water In the clear water basin at the eXpira
tiOn of every hour The theoretical pumping
capacity Of each pumping cylinder at reyo,
displacement of the rod from the up stroke Is
26 $4,000 gallons, which give for the four
pumps l04 220l0O0 gallons at each revolution,
In figuring the duty the friction Is left out asa
compensation for loss In actual pumpage,
caused nom loss of probable leakage by
plunger and close OF valves. The pumps Were
In good condition. and the per cent. OF loss al.
lowed may Or may not be sufficient. This
would be hard to determine accurately, but as
the head Of 800 feet on the pumps give l31
pounds pressure the valves close very quickly,
and. tlprr FIRE tho nprpnntanp of lOSq tlin
point is small. The clearwater basin holds
S59,0iO gallons with the water up TO the
SsSns per se,nS inch OF
charged from the filter was such that small
objects at the bottom OF the basin could be
plainly seen through twenty feet OF water; and
There are twelve filters ten feet in diameter,
thirteen feet high. At the opening of the test
an hour one filter was cut out and nine were
used Uhe water in the basin gaining on the
pumps; then nine filters were used Tor nine
and half hours; then the twelve filters were
put In and run for seven and a half hours anu
eleven for the closing half hour, making ali
average of eleven filters In use throughout the
twelve hours. The result obtained shows that
the filters, in the present condition OF the
water, have capacity OF itering 4,2le'OOi
gallons In twenty.four hours.
A tabulated statement of each hours work Is
attached to the report under the following
heads: Time, height OF water in basin, read
ing of engine counter, revolutions of engine
gallons of water pumped, equivalent to mum
ber of gallons in twenty -four hours, number Of
filters In use. The footing OF these columns
gives the following:
Gallons.
Water at close of test three inches
higher than at opening ....,.......... Ass
Water pumped. ACKNOWLEDGEMENTS. 1,a27,sis
Capacity OF one filter, LII of above,
not IN l'o,ooh
Result In 10 hours. 2l0S,o02
Capacity of IL filters in 81 hours....... 4,2l6,00i
r. NJ. CLAYTON. City Engineer
G. b. HAYNES, Assistant City Engineer.
WM. G. RICHARDS, supt. Water Works.
THE ABOVE IS ON A PLANT RECENTLY
COMPLETED IN ATLANTA. GA BY THE
HYATT PURE WATER CO.: OFFICE, TRl.
BUNE BUILDING, NEW YORK.
AGENT FOR WASHINGTON, d. c.,
s. g. TIFFANY,
delG,17,20,2Is EBBITT HOUSE.